IPC Subgroup
H01J 17/62 with independent discharge paths controlled by intermediate electrodes, e.g. polyphase rectifier
Introduced: September 1968
Last revised: January 2006
Full Title
Gas-filled discharge tubes with solid cathodes > Thermionic-cathode tubes > with more than one cathode or anode > with independent discharge paths controlled by intermediate electrodes, e.g. polyphase rectifier
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS